LT8306 Series

60V Low IQNo-Opto Isolated Flyback Controller

Catalog

60V Low IQNo-Opto Isolated Flyback Controller

Part	Output Type	Frequency - Switching [Min]	Frequency - Switching [Max]	Topology	Package / Case	Number of Outputs	Grade	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Control Features	Function	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Qualification	Mounting Type	Supplier Device Package	Output Phases
Analog Devices LT8306RS6#TRMPBF	Transistor Driver	10 kHz	400 kHz	Flyback	SOT-23-6 Thin TSOT-23-6	1	Automotive	4.5 V	60 V	Current Limit Enable Frequency Control Soft Start	Step-Up/Step-Down	Isolation Capable Positive	150 °C	-40 °C	AEC-Q100	Surface Mount	TSOT-23-6	1
Analog Devices LT8306RS6#TRPBF	Transistor Driver	10 kHz	400 kHz	Flyback	SOT-23-6 Thin TSOT-23-6	1	Automotive	4.5 V	60 V	Current Limit Enable Frequency Control Soft Start	Step-Up/Step-Down	Isolation Capable Positive	150 °C	-40 °C	AEC-Q100	Surface Mount	TSOT-23-6	1
Analog Devices LT8306RS6#WTRMPBF	Transistor Driver	10 kHz	400 kHz	Flyback	SOT-23-6 Thin TSOT-23-6	1	Automotive	4.5 V	60 V	Enable Frequency Control Soft Start	Step-Up/Step-Down	Isolation Capable Positive	150 °C	-40 °C	AEC-Q100	Surface Mount	TSOT-23-6	1

Catalog

60V Low IQNo-Opto Isolated Flyback Controller

Key Features

• Wide Input Voltage Range: 4.5V to 60V

• Low Quiescent Current120μA in Sleep Mode390μA in Active Mode

• 120μA in Sleep Mode

• 390μA in Active Mode

• Quasi-Resonant Boundary Mode Operation at Heavy Load

• Low Ripple Burst Mode®Operation at Light Load

• Minimum Load < 0.5% (Typ) of Full Output

• VOUTSet with a Single External Resistor

• 8V Gate Drive for External NFET

• No Transformer Third Winding or Opto-Isolator Required for Regulation

• Accurate EN/UVLO Threshold and Hysteresis

• Internal Compensation and Soft-Start

• Output Short-Circuit Protection

• 6-Lead TSOT-23 Package

• AEC-Q100 Qualified for Automotive Applications

Description

The LT8306 is a micropower isolated flyback controller in a 6-lead ThinSOT™package. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple burst mode operation maintains high efficiency at light load while minimizing the output voltage ripple. The LT8306 drives a low side N-channel power MOSFET with 8V gate drive.The LT8306 has a wide input voltage range of 4.5V to 60V. The high level of integration and the use of boundary and low ripple burst modes result in a simple-to-use, low component count, and high efficiency application solution for isolated power delivery.APPLICATIONSIsolated Telecom, Automotive, Industrial, Medical Power SuppliesIsolated Auxiliary/Housekeeping Power Supplies